flat washer,spring washer,copper washer,fender washer,square washer,standar washer,H.J Tech Industry is a leading washer manufacturer

Hardness Form

Hardness Form
洛氏		表面洛氏			维氏	布氏(F/D2=30)
HRC	HRA	HR15N	HR30N	HR45N	HV	HBS	HBW
20.0	60.2	68.8	40.7	19.2	226	225
20.5	60.4	69.0	41.2	19.8	228	227
21.0	60.7	69.3	41.7	20.4	230	229
21.5	61.0	69.5	42.2	21.0	233	232
22.0	61.2	69.8	42.6	21.5	235	234
22.5	61.5	70.0	43.1	22.1	238	237
23.0	61.7	70.3	43.6	22.7	241	240
23.5	62.0	70.6	44.0	23.3	244	242
24.0	62.2	70.8	44.5	23.9	247	245
24.5	62.5	71.1	45.0	24.5	250	248
25.0	62.8	71.4	45.5	25.1	253	251
25.5	63.0	71.6	45.9	25.7	256	254
26.0	63.3	71.9	46.4	26.9	259	257
26.5	63.5	72.2	46.9	26.9	262	260
27.0	63.8	72.4	47.3	27.5	266	263
27.5	64.0	72.7	47.8	28.1	269	266
28.0	63.3	73.0	48.3	28.7	273	269
28.5	64.6	73.3	48.7	29.3	276	273
29.0	64.8	73.5	49.2	29.9	280	276
29.5	65.1	73.8	49.7	30.5	284	280
30.0	65.3	74.1	50.2	31.1	288	283
30.5	65.5	74.4	50.6	31.7	292	287
31.0	65.8	74.7	51.1	32.3	296	291
31.5	66.1	74.9	51.6	32.9	300	294
32.0	66.4	75.2	52.0	33.5	304	298
32.5	66.6	75.5	52.5	34.1	308	302
33.0	66.9	75.8	53.0	34.7	313	306
33.5	67.1	76.1	53.4	35.3	317	310
34.0	67.4	76.4	53.9	35.9	321	314
34.5	67.7	76.7	54.4	36.5	326	318
35.0	67.9	77.0	54.8	37.0	331	323
35.5	68.2	77.2	55.3	37.6	335	327
36.0	68.4	77.5	55.8	38.2	340	332
36.5	68.7	77.8	56.2	38.8	345	336
37.0	69.0	78.1	56.7	39.4	350	341
37.5	69.2	78.4	57.2	40.0	355	345
38.0	69.5	78.7	57.6	40.6	360	350
38.5	69.7	79.0	58.1	41.2	365	355
39.0	70.0	79.3	58.6	41.8	371	360
39.5	70.3	79.6	59.0	42.4	376	365
40.0	70.5	79.9	59.5	43.0	381	370	370
40.5	70.8	80.2	60.0	43.6	387	375	375
41.0	71.1	80.5	60.4	44.2	393	380	381
41.5	71.3	80.8	60.9	44.8	398	385	386
42.0	71.6	81.1	61.3	45.4	404	391	392
42.5	71.8	81.4	61.8	45.9	410	396	397
43.0	72.1	81.7	62.3	46.5	416	401	403
43.5	72.4	82.0	62.7	47.1	422	407	409
44.0	72.6	82.3	63.2	47.7	428	413	415
44.5	72.9	82.6	63.6	48.3	435	418	422
45.0	73.2	82.9	64.1	48.9	441	424	428
45.5	73.4	83.2	64.6	49.5	448	430	435
46.0	73.7	83.5	65.0	50.1	454	436	441
46.5	73.9	83.7	65.5	50.7	461	442	448
47.0	74.2	84.0	65.9	51.2	468	449	449
47.5	74.5	84.3	66.4	51.8	475	463
48.0	74.7	84.6	66.8	52.4	482	470
48.5	75.0	84.9	67.3	53.0	489	478
49.0	75.3	85.2	67.7	53.6	497	486
49.5	75.5	85.5	68.2	54.2	504	494
50.0	75.8	85.7	68.6	54.7	512	502
50.5	76.1	86.0	69.1	55.3	520	510
51.0	76.3	86.3	69.5	55.9	527	518
51.5	76.6	86.6	70.0	56.5	535	527
52.0	76.9	86.8	70.4	57.1	544	535
52.5	77.1	87.1	70.9	57.6	552	544
53.0	77.4	87.4	71.3	58.2	561	552
53.5	77.7	87.6	71.8	58.8	569	561
54.0	77.9	87.9	72.2	59.4	578	569
54.5	78.2	88.1	72.6	59.9	587	577
55.0	78.5	88.4	73.1	60.5	596	585
55.5	78.7	88.6	73.5	61.1	606	593
56.0	79.0	88.9	73.9	61.7	615	601
56.5	79.3	89.1	74.4	62.2	625	608
57.0	79.5	89.4	74.8	62.8	635	616
57.5	79.8	89.6	75.2	63.4	645	622
58.0	80.1	89.8	75.6	33.9	655	628
58.5	80.3	90.0	76.1	64.5	666	634
59.0	80.6	90.2	76.5	65.1	676	639
59.5	80.9	90.4	76.9	65.6	687	643
60.0	81.2	90.6	75.2	66.2	698	647
60.5	81.4	90.8	77.7	66.8	710	650
61.0	81.7	91.0	78.1	67.3	721
61.5	82.0	91.2	78.6	67.9	733
62.0	82.2	90.4	79.0	68.4	745
62.5	82.5	91.5	79.4	69.0	757
63.0	82.8	91.7	79.8	69.5	770
63.5	83.1	91.8	80.2	70.1	782
64.0	83.3	91.9	80.6	70.6	795
64.5	83.6	92.1	81.0	71.2	809
65.0	83.9	92.2	81.3	71.7	822
65.5	84.1	836
66.0	84.4	850
66.5	84.7	865
67.0	85.0	879
67.5	85.2	894
68.0	85.5	909